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Between steel and iron which is more suitable for making permanent magnets electromagnet and magnetic screen ​give reason for your answer

Sagot :

Answer:

steel is suitable for making permanent magnet

as still has hi factor coercity.

iron is for electromagnet and magnetic screen as iron loses its magnetism as soon as the switch is open and a current is switched off.

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Steel is better suitable for making permanent magnets than soft iron since it has higher retentivity and lower coercivity. Compared to soft iron, steel has a lower retentivity and higher coercivity. Compared to soft iron, steel is more resilient and coercive.

What is retentivity and coercivity ?

  • Retentivity : The ability to retain the generated magnetization in a magnetic material when the magnetizing force is removed
  • Coercivity : A measure of the ability of a material to withstand an external magnetic field without becoming demagnetized.

What is Permanent magnet and Electromagnet?

  • Permanent magnet : To be suitable for permanent magnet, material should retain its magnetism for longer time, since  steel have high retentivity and coercivity .
  • Electromagnet : To be suitable for electromagnet , material should have magnetization and demagnetizing property .

Since , steels have high remanence which means it will remain magnetized even after magnetic field is removed which is not suitable for electromagnetic . iron has high permeability so magnetization is larger and have low retentivity so that material will not retain the magnetic properties . Magnetic screen ​, Iron has high permeability hence it can shield better than steel

To learn more about retentivity and coercivity

https://brainly.com/question/24130879

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